Valve



May 1, 1928. 1,668,342 N. M. SMALL VALVE Filed Feb. 23, 1926 PatentedMay 1, 1928.

UNITED STATES PATENT OFFICE.

NORMAN M. SMALL, OF WAYNESBOB-O, PENNSYLVANIA, ASSIGNOR T ERICK COM-IPANY, OF VJ'AYNESBORO, PENNSYLVANIA, A GOEIPORATION OF PENNSYLVANIA.

VALVE.

Application filed February 23. 1926. Serial No. 90,210.

My invention relates to a valve and it is an object thereof to provide avalve having independent upper and lower plates for closing the ports,said plates being normally held in closed position by springs;

Another object of the invention is to provide the valves with narrowring seats whereby the necessary differential pressure for operating theplates is reduced to a minimum.

Another object is to provide a sort of double-ported effect whereby theflow through the valve may be increased when it is fully opened.

Referring to the accompanying drawings, which are made a part hereof andon which similar reference characters indicate similar parts,

Figure 1 is a longitudinal valve in closed position,

Figure 2, a longitudinal section in open position,

Figure 3, a transverse section on line 3-3 of Figure 1,

Figure 1, a section on line 1--1 of Figure 1, and c Figure 5, a sectionon line 5-5 of Figure 1.

In the drawings reference character indicates the upper body member ofthe valve which is provided with a separable lower body portion 11 heldto the first-named section of the member by a screw 12, the membersbeing separated along line 33 of Figure 1. A perforated ring 13 fits inthe cored-out runderside of thebody member 10 and a ring 1% lies againstthe underside of the ring 13 in the closed position of the valve. A fiatcoiled spring 15 bears against the underside of the ring 1 1 and servesto hold the two rings in the valve closing position. The spring 15 islocated in an annular chamber in the lower body member 11 which chamberis provided with fluid outlet-s 26 for relieving pressure created bymovement of spring and plates.

The upper ring fits against narrow seats on flanges 16 and 17 of theupper body member, these narrow seats causing the valve to operate witha much smaller difference in pressure than has heretofore beencustomary. The upper body member is provided with a plurality of ports19 leading from a coredoutupper chamber to ports 20in the ring 13. Whenthe pressure in the chamber rises sufficiently high the rings 13 and 1dwill be forced downward against the pressure of the spring 15, thedownward movement of ring 14 being limited by the upper ends of theinner and outer walls of the annular chamher in which the spring islocated and the downward movement of the ring 13 being limited byshoulders at 21 on the body mem ber 11. y

When the rings have thus been forced down the fluid may pass throughports 19 and over the top of the ring, as indicated by arrows in Figure2 or through ports 19 a nd ports 20 and then between the rings 18' and 11 to the passages 2:2 and 23. One of the body members may be providedwith a pin to enter an opening in the other member for insuring properregistration of the ports. in the present embodiment of the invention apin 24: is shown on the lower body member and a cooperating hole 25'onthe outer body member.

It may be noted in Figure 1 that the valve seat 17 is spaced from theouter circumferential part of the body member 10 andfrom the inwardlydirected parts between the passages 22. The inner seat 16 is also spacedfrom the central part of the body and from the spider-like projectionswhich co-act with tzle lower body member to provide passages It will beobvious" to those skilled in the art that various changes may be made inmy device without departing from the spirit of the invention andtherefore I do not limit myself to what is shown in the drawings anddescribed in the specification but only as indicated in the appendedclaims.

Having thus fully described my said invention, what I claim as new anddesire to secure by Letters Patent, is:

1. A valve comprising upper and lower body members having axiallydisposed passages therethrough and an internal annular chamberintercepting said passages, concentric rings at one side of said chamberforming valve seats, a perforated ring valve for cooperation with saidseats, a second ring valve for closing the ports in the first mentionedring valve, means for limiting the rings in their movement away from thevalve seats for holding such rings in spaced relation, and spring meansfor holding said rings in position to close the axially disposedpassages through the valve, substantially as et forth. 1

2. A valve comprising a pair of body members, axial openings throughsaid body members, a perforated valve for closing the openings throughone of the body members, a second valve for closing the perforationsthrough the last mentioned valve, spring means for holding the valves inclosed position, and means peri'i'iitting said valves to be held infixed spaced relation when open, substantially as set forth.

3. A valve comprising a pair of body members, an annular chamber formedin said body members, passages extending axially through the valve bodyinto said annular chamber, a perforated ring valve disposed in saidchamber, an imperforate ring valve resting on said perforated ring, acoiled spring for holding said valves in closed position, passagesadjacent each side of said coil spring for permitting the escape offluid through the valve body and means for holding said ring valves inspaced relation When in open position, substantially as set forth.

4. A valve comprising a pair of body members, staggered passages throughsaid body members, an annular chamber formed in the body members, aperforated ring shaped valve body disposed in said annular chamber, aniniperforated ring shaped valve body disposed in said annular chamber incontact with said perforated valve body, means for limiting the movementof said valve bodies away from their whereby they are held in spacedrelation and spring means for normally holding said valve bodies inclosed position, substantially as set. forth.

In Witness whereof, I have hereunto set my hand at lVaynesboro,Pennsylvania this 19" day of February, A. D. nineteen hundred andtwenty-six.

NORMAN M. SMALL.

